共查询到16条相似文献,搜索用时 125 毫秒
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高功率横流CO2激光器大体积放电研究 总被引:1,自引:0,他引:1
详细讨论了脉冲预电离高功横流CO2激光器的工作特性,研究了一套新型的电极结构,对其放电,注入功率,输出功率等待进行了讨论。实验结果表明,脉冲预电离可以提高高功率横率流CO2激光器的注入和输出功率,并有效地改善了放电的稳定性和均匀性。 相似文献
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本文描述了一台10kW横流CO_2激光器在脉冲予电离下的增益特性及关于增益分布和脉冲予电离的理论分析. 相似文献
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利用像增强CCD相机对脉冲CO2激光器的放电区进行观测,获得了放电辉光的发展过程,由此研究了长脉冲放电电路和短脉冲放电电路对放电过程的影响。发现普通电容放电电路(长脉冲放电电路)存在与自持放电阶段相对应的二次辉光;采用磁压缩开关的短脉冲放电电路,预电离出现较晚,但预电离辉光峰值和主放电辉光峰值之间间距较短,不存在自持放电阶段,只观测到一次强辉光。长脉冲放电电路与短脉冲放电电路在放电的后期均存在一个阴极位降区形成的过程。短脉冲放电电路有利于产生更窄的脉宽和更高的峰值功率。 相似文献
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《中国光学与应用光学文摘》2007,(1)
TN248.22007010192TEA CO2激光器主放电延迟时间对效率的影响=I mpactof main discharge delay ti me on optoelectronic conversionefficiency in TEA CO2laser[刊,中]/李殿军(中科院长春光机所.吉林,长春(130033)),杨贵龙//光学精密工程.—2006,14(5).—807-810介绍了TEA CO2激光器火花针紫外预电离与主放电之间的延迟时间对激光器输出电光转换效率影响的实验研究结果。通过改变放电回路中的感抗值,可以改变预电离与主放电之间的延迟时间。实验结果表明:当预电离与主放电的延迟时间在200~600ns范围变化时,激光器输出的电光转换效… 相似文献
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Multibeam CO2 lasers consist of a large number of closely packed parallel glass discharge tubes, all sharing a common plane parallel resonator. This paper describes construction and operation of a CW multibeam CO2 laser consisting 20 discharge tubes and cooled length of 1500 mm, delivering 1 kW power. A high-frequency pulser is used for producing preionization in all discharge sections for initiating the main DC discharge simultaneously in all discharge tubes. Plane parallel resonator consists of a plane ZnSe mirror of 90 mm diameter having 60% reflectivity and a gold-coated copper mirror of same diameter. This laser operates in waveguide regime and laser power is not critically sensitive to mirror misalignment. 相似文献
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Preionization and discharge stability study of long optical pulse duration UV-preionized XeCl lasers
R. S. Taylor 《Applied physics. B, Lasers and optics》1986,41(1):1-24
This paper presents a complete study of the temporal and spatial characteristics of the preionization of a XeCl rare-gas halide laser. The detailed study was made possible using the technique of laser-induced preionization which utilizes the uv radiation from a KrF laser to preionize a second rare-gas halide laser. In addition to the preionization study, high spatial and temporal resolution framing camera photographs have been used to investigate the growth of discharge instabilities which can lead to the premature termination of the XeCl optical pulse. The roles played by HCl, Xe, the buffer gas as well as the discharge energy loading in the development of discharge instabilities have been determined experimentally. 相似文献
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A cryogenically cooled sealed-off x-ray preionized self-sustained discharge CO laser was succesfully operated. It was found that 20 to 40% higher output energies could be obtained using x-ray instead of uv preionization. A maximum output energy of 2.9 J per pulse could be extracted from a 2×2×40cm3 discharge volume. The maximum electrical efficiency proved to be 12.6%. 相似文献
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Increasing the preionization electron density is found to be an effective method for improving the output performance of discharge-pumped excimer lasers at high gas pressures when the power-supply voltage becomes a limiting factor. In a small volume (2 cm3), x-ray preionized discharge, orders of magnitude improvement in XeCl laser power output (up to 400 kW) and pulse energy (up to 26 mJ) over previously reported results have been found possible using this method. Modifications to the low energy x-ray source and discharge system leading to these improvements are described. Various laser output characteristics are also presented and discussed. 相似文献